Gallo culebrón
The Gallo culebrón is the southern Chilean version of the basilisk. It is a beast with the head of a rooster, the body of a green snake, and a deadly breath. It tends to appear suddenly in houses where there is a terminally ill person, as a way of announcing imminent death, and it leaves behind a nauseating stench.
The Gallo culebrón reproduces by means of eggs. If one of its eggs is discovered in a dwelling, it must be buried as far away as possible without being broken.